Absolutely incredible. Stunning. A must see. The Basilica is worth every moment of your time. You would be best served to go into this church with a plan to spend at least 45 minutes to one hour admiring the design and architecture. Take your time. There is a lot to see. It is very peaceful and even when there's a lot of people inside, there is a serene quality. One need not be religious to appreciate the beauty and significance. Unfortunately, as my stay was only 24 hours, I did not have enough time to go into the tower, but when I return I plan to do so.